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Article: Landfill leachate treatment by anaerobic process and electrochemical oxidation

TitleLandfill leachate treatment by anaerobic process and electrochemical oxidation
Authors
Issue Date2001
Publisher科學出版社. The Journal's web site is located at http://hjkx.periodicals.net.cn/default.html
Citation
Huanjing Kexue/Environmental Science, 2001, v. 22 n. 5, p. 70-73 How to Cite?
AbstractThis study was conducted to develop a two-stage process of UASB and electrochemical oxidation for the treatment of Hong Kong leachate. The leachate, containing 4750 mg/L of chemical oxygen demand (COD) and 1310 mg/L of ammoniacal nitrogen (NH3-N), was first treated in a UASB (upflow anaerobic sludge blanket) reactor at 37°C. The process removed on average 66% of COD with 6.1 days of hydraulic retention time (HRT), corresponding to an organic loading rate COD of 0.78 g/(L · d). The UASB effluent, which had an average pH of 8.9, COD of 1610 mg/L and NH3-N of 1480 mg/L, was then further treated by electrochemical oxidation in a batch reactor with recirculation. With the addition of 2000 mg/L of chloride (in the form of sodium chloride) and at a current density of 32.3 mA/cm2, 87% of COD and 100% of NH3-N were removed from the UASB effluent in six hours. The energy consumption was <55kW · h/kg COD. The final effluent contained no residual NH3-N and only 209 mg/L of COD. In this paper, some basic problems in electrochemical oxidation, such as the effects of the operation parameters, the mechanism of the process, and assessment of the energy requirements were discussed in detail.
Persistent Identifierhttp://hdl.handle.net/10722/150188
ISSN
2015 SCImago Journal Rankings: 0.153

 

DC FieldValueLanguage
dc.contributor.authorWang, Pen_US
dc.contributor.authorLau Ivan, WCen_US
dc.contributor.authorFang Herbert, HPen_US
dc.date.accessioned2012-06-26T06:02:06Z-
dc.date.available2012-06-26T06:02:06Z-
dc.date.issued2001en_US
dc.identifier.citationHuanjing Kexue/Environmental Science, 2001, v. 22 n. 5, p. 70-73en_US
dc.identifier.issn0250-3301en_US
dc.identifier.urihttp://hdl.handle.net/10722/150188-
dc.description.abstractThis study was conducted to develop a two-stage process of UASB and electrochemical oxidation for the treatment of Hong Kong leachate. The leachate, containing 4750 mg/L of chemical oxygen demand (COD) and 1310 mg/L of ammoniacal nitrogen (NH3-N), was first treated in a UASB (upflow anaerobic sludge blanket) reactor at 37°C. The process removed on average 66% of COD with 6.1 days of hydraulic retention time (HRT), corresponding to an organic loading rate COD of 0.78 g/(L · d). The UASB effluent, which had an average pH of 8.9, COD of 1610 mg/L and NH3-N of 1480 mg/L, was then further treated by electrochemical oxidation in a batch reactor with recirculation. With the addition of 2000 mg/L of chloride (in the form of sodium chloride) and at a current density of 32.3 mA/cm2, 87% of COD and 100% of NH3-N were removed from the UASB effluent in six hours. The energy consumption was <55kW · h/kg COD. The final effluent contained no residual NH3-N and only 209 mg/L of COD. In this paper, some basic problems in electrochemical oxidation, such as the effects of the operation parameters, the mechanism of the process, and assessment of the energy requirements were discussed in detail.en_US
dc.languageengen_US
dc.publisher科學出版社. The Journal's web site is located at http://hjkx.periodicals.net.cn/default.htmlzh_HK
dc.relation.ispartofHuanjing Kexue/Environmental Scienceen_US
dc.subject.meshAnaerobiosisen_US
dc.subject.meshElectrochemistryen_US
dc.subject.meshOxidation-Reductionen_US
dc.subject.meshRefuse Disposalen_US
dc.subject.meshWaste Managementen_US
dc.titleLandfill leachate treatment by anaerobic process and electrochemical oxidationen_US
dc.typeArticleen_US
dc.identifier.emailFang Herbert, HP:hrechef@hkucc.hku.hken_US
dc.identifier.authorityFang Herbert, HP=rp00115en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid11769233-
dc.identifier.scopuseid_2-s2.0-0035443762en_US
dc.identifier.volume22en_US
dc.identifier.issue5en_US
dc.identifier.spage70en_US
dc.identifier.epage73en_US
dc.publisher.placeChinaen_US
dc.identifier.scopusauthoridWang, P=7407616360en_US
dc.identifier.scopusauthoridLau Ivan, WC=6504211554en_US
dc.identifier.scopusauthoridFang Herbert, HP=7402542625en_US

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